Definitions: Honda owner's manuals, Maintenance Minder section (2016 and 2024 Civic, 2013 and 2018 Accord, 2017 CR-V, 2018 Odyssey, 2016 and 2021 Pilot). Manuals: 2024 Civic Hatchback Type R Owner's Manual, 2021 Pilot Owner's Manual. Your own manual decides which items apply to your engine and drivetrain.
A2 means two jobs are due at once: A (replace the engine oil - oil only, no oil filter and no tire rotation) and 2 (replace the engine air filter AND the cabin, or dust and pollen, filter, and inspect the drive belt). It is a Maintenance Minder reminder, not a fault code.
The 2 runs on its own schedule. Honda prints no fixed mileage for it under normal driving - the Minder decides - but the Civic, Accord and CR-V manuals give a severe-duty figure of every 15,000 miles: for the engine air filter if you drive on dusty roads, and for the cabin filter in high-soot city air. When the filters come due on an oil-only visit rather than a B visit, you see A2 instead of B2.
A2 is easy to under-serve: "an oil change" does not hint that two filters are also due, so ask for the 2 by name. Both filters are quick swaps on most Hondas, which makes A2 one of the cheapest codes to finish yourself.
The 2 covers three things in Honda's wording: replace the engine air filter, replace the cabin dust and pollen filter, and inspect the drive belt. Nothing about tires, so if your car also needs a rotation, mention it at the counter; it will not be added for you.
Honda prints no mileage for the 2 in normal driving. The only figures are footnotes: replace the engine air filter every 15,000 miles if you drive in dusty conditions, and the cabin filter every 15,000 miles if you drive mainly in urban air with heavy industrial or diesel soot. The Minder works from engine operating conditions and cannot see dust, so on those roads go by the 15,000 miles rather than waiting for a 2.
The drive belt runs the alternator and other accessories. Look for cracks across the ribs, frayed edges, shiny glazed patches and any chirping at start-up. Inspecting it is part of the 2; replacing it is a separate job and a separate quote.
If a shop offers to replace the belt at an A2, ask for the finding that supports it. A belt with no visible damage is not a Minder item.
| Item | DIY | Shop |
|---|---|---|
| Oil change (0W-20) | $25-$45 | In the all-in price |
| Engine air filter | $15-$30 | $40-$70 |
| Cabin (dust and pollen) filter | $15-$30 | $40-$75 |
| Typical all-in | $55-$95 | $130-$210 |
Ranges, not quotes - parts pricing and shop labor vary by region and model year.
A2 is a beginner-friendly service. The oil change is conventional and both filters are tool-free or nearly so on most models - no lift, no specialty tools, just a few minutes at the glove box and under the hood.
The one thing to get right is buying the correct cabin filter for your trim - some Hondas use a different size or a filter with an activated-carbon layer. Check the part number rather than assuming last year's filter fits. Beyond that, A2 is one of the cheapest ways to keep a Maintenance Minder code from showing up at all: do the filters yourself and the shop bill for A2 barely moves above a plain oil change.
A = change the engine oil. 2 = replace the engine air filter and the cabin (dust and pollen) filter, and inspect the drive belt. No tire rotation and no oil filter - those belong to sub-code 1 and to B services.
Typically $130-$210 at a shop, or roughly $55-$95 in parts if you do it yourself. Most of the shop cost is the two filters, not the oil.
No. A2 is oil plus the two filters only. A12 adds a tire rotation (the 1) on top of the same oil and filters. A2 is A12 minus the rotation.
No. A is oil only, and the 2 covers the engine and cabin air filters, not the oil filter. Honda changes the oil filter at B services. A shop that swaps it anyway at A2 is doing extra work, not something the code asked for.
There is no fixed interval. Honda prints no normal-driving mileage for the 2 - the Minder calculates it - and gives 15,000 miles as the severe-duty figure for dusty roads (engine filter) or high-soot city air (cabin filter). A2 appears when the filters come due on an oil-only visit instead of a B visit.
It is the Minder's early warning. The wrench and the code appear at 15 percent oil life (Maintenance Due Soon); at 5 percent it reads Maintenance Due Now, and past zero it shows Maintenance Past Due and counts negative miles. Book the visit, but the car is fine to drive in the meantime.
Yes. The definition is Honda's and does not change by model: engine oil, both air filters and a drive belt check. The 15,000-mile severe-duty filter figure is printed in the Civic, Accord and CR-V manuals alike. On an AWD CR-V the rear differential fluid is a separate item (6) that A2 does not cover.
| Part | Fitment note | Buy |
|---|---|---|
| Mobil 1 Extended Performance 0W-20 Full Synthetic (5 qt) | Most 2012-and-newer Hondas spec 0W-20. Check the oil cap: roughly pre-2012 models call for 5W-20 instead. | Check price on Amazon |
| Honda Genuine 5W-20 Synthetic Blend motor oil | Only if your oil cap says 5W-20 (most 2006-2011 Civics, Accords, CR-Vs and the older V6s). | Check price on Amazon |
| Honda 94109-14000 drain plug crush washers (10-pack) | A new aluminum washer every drain. Reusing the old one is how drain plugs start seeping. Backup is a 20-pack (double the primary) - same washer, just more of them. | Check price on Amazon Compare Honda similar options on Amazon |
| Part | Fitment note | Buy |
|---|---|---|
| Honda Genuine engine air filter | Model- and engine-specific part number. Filter the results by your model and year before buying. | Check price on Amazon |
| Honda Genuine cabin air filter | Behind the glove box on most models. Also model-specific; a Civic filter does not fit a CR-V. | Check price on Amazon |
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